Custom field for wordpress theme

For my website, i need a custom text field in sidebar or "company" template. We select the template with "custom-post-template" plugin. Also we have a java script problem on the landing page, columns are changing their location.

I'm interested in wordpress jobs. I am able to mange the tasks mentioned in the job profile. I have been a working as Web Designer and programmer for 5 years, and am very familiar with Web Designing and Web ProgrammingPlus